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      05-22-2019, 11:46 AM   #2
modthispny
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Drives: 2022 540i M sport
Join Date: Oct 2006
Location: Studio City, CA

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Quote:
Originally Posted by cmargosi View Post
Is there anyone out there that has put this tune on their M550? The local speedshop I trust says it's good for 85hp and undetectable by the service departments.

I don't doubt the 85hp. Wonder about the lack of detectability?

Anyone done it?
i think consensus is anytime you take it in, you should revert back to stock flash, but if bmw looks deep enough in case of a catastrophic failure, they can find out that the car was tuned.
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